DiamondCS CSView has everything you need in a CSV file viewer and nothing you don't, making it the ideal CSV viewer for nearly all situations. CSView, like our other free utilities, is free for both commercial and non-commercial use.

What is a CSV file?
CSV stands for Comma Separated Values. It is a very simple and popular text-based tabular file format that is easy for both software and humans alike to generate and read. Each line in a CSV file represents a row, and each column of data is separated by a comma (hence the name). The first row (that is, the first line in the file) is treated as the header line. Due to the format specification commas can't be used in data fields as they're used to denote fields.